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From |
Maarten Buis <maartenlbuis@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: FW: odds ratios/risk ratio: variables and levels of variable |

Date |
Sat, 31 Dec 2011 14:47:41 +0100 |

On Sat, Dec 31, 2011 at 1:29 AM, Anthony Petrosino <anthony_petrosino@hotmail.com> wrote: > I have a data set in which I would like to examine the odds ratios and risk ratios of the variable (e.g., race/ethnicity) on an outcome of crime (yes/no outcome) and also examine them for different levels of the variable (white/black/Hispanic/etc.). > > Also, I'm not sure logistic/logit regression is what we want to use. We are not attempting to build a model, per se, to explain the outcome, but looking at the risk/odds for being in various subgroups. Is there a cross-tab function that allows one to do this? You can use -logit- for getting the different odds and -poisson- or -regress. for getting the different risks. The trick is to exclude the constant and the baseline categories. Consider the example below. The odds of being a union member is .355 union members for every non-member if one is divorced/widowed and without college degree. The odds of being a union member is .246 union members for every non-member if one is married and without college degree. The equivalent risks of being a union member are .262 and .197. *--------------- begin example ----------------- sysuse nlsw88, clear gen marst = married + 2*never_married label define marst 0 "divorced/widowed" /// 1 "married" /// 2 "never married" logit union ibn.marst#i.collgrad, or nocons poisson union ibn.marst#i.collgrad, irr nocons *----------------- end example ------------------ (For more on examples I sent to the Statalist see: http://www.maartenbuis.nl/example_faq ) Hope this helps, Maarten -------------------------- Maarten L. Buis Institut fuer Soziologie Universitaet Tuebingen Wilhelmstrasse 36 72074 Tuebingen Germany http://www.maartenbuis.nl -------------------------- * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**st: FW: odds ratios/risk ratio: variables and levels of variable***From:*Anthony Petrosino <anthony_petrosino@hotmail.com>

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